Synthesis and characterization of aluminium-phosphorus adducts: X-ray crystal structures of Cl3Al·P(SiMe3)3·C7H8 and Br3Al·P(SiMe3)3·C7H8

Journal Article

The attempted dehalosilylation reactions between AlX3 (X = Cl, Br) and P(SiMe3)3 in toluene in 1:1 mole ratios afforded only the adducts Cl3Al·P(SiMe3)3 (I) and Br3Al·P(SiMe3)3 (II), respectively. Compounds I and II were characterized by 1H, 13C, 27Al, and 31P solution NMR spectroscopy, as well as partial elemental analysis. In addition, the solid state structures of the toluene solvates of I and II were determined by single-crystal X-ray analysis. Characterization revealed that the solid solvated adducts I and II are isostructural and their crystals are isomorphous. In each compound, the Al and the P atoms reside in tetrahedral environments, with each X3Al·P(SiMe3)3 (X = Cl, Br) molecule associated with one interstitial toluene molecule in the crystals. These adducts are noteworthy in that they possess extremely short, essentially equal AlP bond lengths [for I: AlP = 2.392(4) Å, and for II: AlP = 2.391(6) Å], which are the shortest found to date in aluminium-phosphorus molecular species. © 1994.

Full Text

Duke Authors

Cited Authors

  • Wells, RL; McPhail, AT; Laske, JA; White, PS

Published Date

  • January 1, 1994

Published In

Volume / Issue

  • 13 / 19

Start / End Page

  • 2737 - 2744

International Standard Serial Number (ISSN)

  • 0277-5387

Digital Object Identifier (DOI)

  • 10.1016/S0277-5387(00)83431-2

Citation Source

  • Scopus